Brake block and shoe.



UNITED STATES PATENT OFFICE.

BRAKE BLOCK AND SHOE.

Specification of Letters Patent.

Patented Feb. 27, 1906.

Application filed illy 17, 1905. Serial No. 270,081-

To all whom it may concern.-

Be it known that I, LLOYD G. GALLUP, a citizen of the United States, residing at Walton, in the county of Delaware and State of New York, have invented a new and useful Brake Block and Shoe, of which the following is a specification.

This invention relates to vehicle-brakes, more particularly to the brakes of ordinary farm-wagons, and has for its object to provide a simplyconstructed device of this character whereby the shoeportion of the brake mechanism will be automatically released and liable to drop from place when worn to an extent sufficient to require renewal.

Another object of the invention is to produce a simply-constructed device of this character wherein the strains are borne by the body of the brake block and shoe and the holding-bolts relieved from shearing strains.

With these and other objects in view,

which will appear as the nature of the invention is better understood, the same consists in certain novel features of construction, as hereinafter fully described and claimed.

In the accompanying drawings, forming a part of this specification, and in which corresponding parts are denoted by like designating characters, is illustrated the preferred form of the embodiment of the invention capable of carrying the same into practical operation. Y

In the drawings thus employed, Figure 1 is a sectional view of the improved device applied. Fig. 2 is a perspective view of the head-block member. Fig. 3 is a perspective view of the shoe detached.

The improved device comprises a headblock member 10, having a rib 11 for bearing upon the upper face of the brake-beam (rep resented at 12) and secured thereto by a bolt 13. the greater portions of the strains are borne by the body of the block and the bolt relieved very largely from the strains, especially shearing or transverse strains.

The up er end 14 of the block member 10 is somewhat pointed or cone-shaped for receiving a lip 15 on the shoe portion 16 of the By this arrangement it will be obvious brake, the lower end of the shoe being secured to the block by a bolt 17, with a relatively shollow laterallyextended head 18 countersunk into the face of the shoe. By this arrangement it will be obvious that when the shoe becomes worn to an extent sufficient to destroy the head 18 of the bolt the shoe will be released and liable to drop from place by the motion of the vehicle or the brakebeam, thus calling the drivers attention to to the fact that the brake-shoes require renewal and preventing wear upon the head block portion of the brake structure.

The head-block portion 10 is of uniform width throughout and with parallel sides, and the shoe portion 16, with its lip 15, is also of uniform width throughout and with correspondingly parallel sides and of the same width, or preferably of slightly greater Width, than the head member 10, as indicated, so that all parts of the head member are protected from contact with the wheel. Thus no part of the headmember becomes worn so long as the shoe member remains in position.

In the ordinary construction of devices of this character the shoes are so secured that the wearing away by the friction of the wheels does not release them. Consequently it frequently happens that the shoes are worn through and the head-block portion badly worn before the driver is aware of that fact, and this abnormal Wear of the blocks is the source of much annoyance and expense to the owners of vehicles. WVith the improved structure herein shown and described the wearing of the head-block is obviated and the life of the brake mechanism materially increased, as the wear is confined to the comparatively inexpensive shoe portions, which may be readily renewed when worn at a trifling cost.

Having thus described the invention, what is claimed is The combination with a brake-beam of a head-block having a lateral lip bearing upon the beam and of uniform width throughout, a clamp-b olt extending through theblock and beam and with a laterally-extended head embedded in the face of the block, a shoe uniform in width to the block and bearing over the face thereof and against the head of said bolt In testimony that I claim the foregoing as and provided with a lip bearing upon said my own I have hereto affixed my signature :0 block, and a bolt extending through said shoe in the presence of two witnesses.

and block and with a relatively flat head countersunk into the face of the shoe, whereby the LLOYD block is protected from contact with the wheel Witnesses:

and the shoe released when worn suflicientl JOHN G. MORE, to destroy the head of the shoe-holding bolt.-

TIMOTHY SANDERsoN. 

